Feature: Main Usage: As an adapter for DIY cleaning the fuel injector nozzle, removed the injector from the engine, it can be cleaned separately. When the injector is clogged, you can use it to save expensive nozzles; Compatibility: This DIY Injector Cleaner adaptor kit is easily to clean most car motorcycle fuel injectors. Package include two white tubes and two crocodiles clip charger cable to fits two different size injectors. Working requirements: It needs the combination of 12V DC power supply and aerosol of Injector or carburetor cleaner ( not included ). Please prepare these necessary tools. No compressed air required. Working principle: The electrical port of the Injector connect the 12V power by this cable. When the current is switched on, the solenoid valve in the nozzle is opened. Meanwhile cleaning liquid flush through white tube, then through injector to clean it. Specifications: Material: Metal,Plastic Input voltage: DC 12 - 24V Color: As Pictures Show Cable length: 88cm/34.6" (Approx.) Package Included: 2x Power Cables (2 size) 2x Fuel Cleaning Injector Nozzles (2 size) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.